<?xml version="1.0" encoding="UTF-8"?>
   <xs:schema targetNamespace="urn:ietf:params:xml:ns:im-iscomposing"
     elementFormDefault="qualified"
     attributeFormDefault="unqualified"
     xmlns:xs="http://www.w3.org/2001/XMLSchema"
     xmlns:tns="urn:ietf:params:xml:ns:im-iscomposing">
     <xs:element name="isComposing">
       <xs:complexType>
         <xs:sequence>
           <xs:element name="state" type="xs:string"/>
           <xs:element name="lastactive" type="xs:dateTime"
             minOccurs="0"/>
           <xs:element name="contenttype" type="xs:string"
             minOccurs="0"/>
           <xs:element name="refresh" type="xs:positiveInteger"
             minOccurs="0"/>
           <xs:any namespace="##other" processContents="lax"
             minOccurs="0" maxOccurs="unbounded"/>
         </xs:sequence>
       </xs:complexType>
     </xs:element>
   </xs:schema>
